1; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s 2; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s 3; 4; Source code: 5; typedef struct t1 { int f1; } __t1; 6; extern __t1 global __attribute__((weak)); 7; int test() { return global.f1; } 8; Compilation flag: 9; clang -target bpf -O2 -g -S -emit-llvm test.c 10 11%struct.t1 = type { i32 } 12 13@global = extern_weak dso_local local_unnamed_addr global %struct.t1, align 4, !dbg !0 14; Function Attrs: norecurse nounwind readonly 15define dso_local i32 @test() local_unnamed_addr #0 !dbg !15 { 16entry: 17 %0 = load i32, i32* getelementptr (%struct.t1, %struct.t1* @global, i64 0, i32 0), align 4, !dbg !18, !tbaa !19 18 ret i32 %0, !dbg !24 19} 20 21; CHECK: .section .BTF,"",@progbits 22; CHECK-NEXT: .short 60319 # 0xeb9f 23; CHECK-NEXT: .byte 1 24; CHECK-NEXT: .byte 0 25; CHECK-NEXT: .long 24 26; CHECK-NEXT: .long 0 27; CHECK-NEXT: .long 116 28; CHECK-NEXT: .long 116 29; CHECK-NEXT: .long 81 30; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 1) 31; CHECK-NEXT: .long 218103808 # 0xd000000 32; CHECK-NEXT: .long 2 33; CHECK-NEXT: .long 1 # BTF_KIND_INT(id = 2) 34; CHECK-NEXT: .long 16777216 # 0x1000000 35; CHECK-NEXT: .long 4 36; CHECK-NEXT: .long 16777248 # 0x1000020 37; CHECK-NEXT: .long 5 # BTF_KIND_FUNC(id = 3) 38; CHECK-NEXT: .long 201326593 # 0xc000001 39; CHECK-NEXT: .long 1 40; CHECK-NEXT: .long 55 # BTF_KIND_TYPEDEF(id = 4) 41; CHECK-NEXT: .long 134217728 # 0x8000000 42; CHECK-NEXT: .long 5 43; CHECK-NEXT: .long 60 # BTF_KIND_STRUCT(id = 5) 44; CHECK-NEXT: .long 67108865 # 0x4000001 45; CHECK-NEXT: .long 4 46; CHECK-NEXT: .long 63 47; CHECK-NEXT: .long 2 48; CHECK-NEXT: .long 0 # 0x0 49; CHECK-NEXT: .long 66 # BTF_KIND_VAR(id = 6) 50; CHECK-NEXT: .long 234881024 # 0xe000000 51; CHECK-NEXT: .long 4 52; CHECK-NEXT: .long 2 53; CHECK-NEXT: .long 73 # BTF_KIND_DATASEC(id = 7) 54; CHECK-NEXT: .long 251658241 # 0xf000001 55; CHECK-NEXT: .long 0 56; CHECK-NEXT: .long 6 57; CHECK-NEXT: .long global 58; CHECK-NEXT: .long 4 59; CHECK-NEXT: .byte 0 # string offset=0 60; CHECK-NEXT: .ascii "int" # string offset=1 61; CHECK-NEXT: .byte 0 62; CHECK-NEXT: .ascii "test" # string offset=5 63; CHECK-NEXT: .byte 0 64; CHECK-NEXT: .ascii ".text" # string offset=10 65; CHECK-NEXT: .byte 0 66; CHECK-NEXT: .ascii "/tmp/home/yhs/work/tests/extern/test.c" # string offset=16 67; CHECK-NEXT: .byte 0 68; CHECK-NEXT: .ascii "__t1" # string offset=55 69; CHECK-NEXT: .byte 0 70; CHECK-NEXT: .ascii "t1" # string offset=60 71; CHECK-NEXT: .byte 0 72; CHECK-NEXT: .ascii "f1" # string offset=63 73; CHECK-NEXT: .byte 0 74; CHECK-NEXT: .ascii "global" # string offset=66 75; CHECK-NEXT: .byte 0 76; CHECK-NEXT: .ascii ".extern" # string offset=73 77; CHECK-NEXT: .byte 0 78 79attributes #0 = { norecurse nounwind readonly "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 80 81!llvm.dbg.cu = !{!2} 82!llvm.module.flags = !{!11, !12, !13} 83!llvm.ident = !{!14} 84 85!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 86!1 = distinct !DIGlobalVariable(name: "global", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: false) 87!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 10.0.0 (https://github.com/llvm/llvm-project.git 71a9518c93fe1dce9611c24bc707e5baf1f39f0d)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, nameTableKind: None) 88!3 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/extern") 89!4 = !{} 90!5 = !{!0} 91!6 = !DIDerivedType(tag: DW_TAG_typedef, name: "__t1", file: !3, line: 1, baseType: !7) 92!7 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !3, line: 1, size: 32, elements: !8) 93!8 = !{!9} 94!9 = !DIDerivedType(tag: DW_TAG_member, name: "f1", scope: !7, file: !3, line: 1, baseType: !10, size: 32) 95!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 96!11 = !{i32 7, !"Dwarf Version", i32 4} 97!12 = !{i32 2, !"Debug Info Version", i32 3} 98!13 = !{i32 1, !"wchar_size", i32 4} 99!14 = !{!"clang version 10.0.0 (https://github.com/llvm/llvm-project.git 71a9518c93fe1dce9611c24bc707e5baf1f39f0d)"} 100!15 = distinct !DISubprogram(name: "test", scope: !3, file: !3, line: 3, type: !16, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !4) 101!16 = !DISubroutineType(types: !17) 102!17 = !{!10} 103!18 = !DILocation(line: 3, column: 28, scope: !15) 104!19 = !{!20, !21, i64 0} 105!20 = !{!"t1", !21, i64 0} 106!21 = !{!"int", !22, i64 0} 107!22 = !{!"omnipotent char", !23, i64 0} 108!23 = !{!"Simple C/C++ TBAA"} 109!24 = !DILocation(line: 3, column: 14, scope: !15) 110